partitioned-communication/test_zerocount0.c seems to be an invalid MPI 4.1 test

[EmmanuelBRELLE]

According to MPI specifications (lines 15-16 page 117 and lines 27-28 of page 118) partitions arguement cannot be equal to 0 in partitioned communications.

Therefore the partitioned-communication/test_zerocount0.c looks invalid to me. Am i correct ?

faulty line : https://github.com/open-mpi/ompi-tests-public/blame/338c54c12641f495e76a33b204e6b7de5cc7adac/partitioned-communication/test_zerocount0.c#L28